Android – Failed to re-package resources – ADS Manager

Make sure you have downloaded the Android Studio and you have linked the Android SDK to your Unity as well as you have installed the Tools, Android APIS,Extras using Android SDK Manager

Check out how to build Android/IOS App in Unity

If you have not set up the above step before, then apply it and try to build again for Android platform.

Otherwise , try to apply the following  steps below :

• Remove all folders under Assets directory and keep your game folder/files only as the following example below :

• Download the following package https://drive.google.com/file/d/0BxEPDwj8HTSJcmttdG5IdEVaX2c
• Put the content of the zipped file that you have downloaded in the previous step under the Assets folder.